<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8" />
    <title>开封菜单</title>
    <link rel="icon" href="/aaaa/favicon.ico">
    <!-- 引入 layui.css -->
    <!--        <link href="../jquery/layui-main/layui-main/src/css/layui.css" rel="stylesheet">-->
    <link href="//unpkg.com/layui@2.9.13/dist/css/layui.css" rel="stylesheet">
    <!-- 引入 layui.js -->
    <!--<script src="../jquery/layui-main/layui-main/dist/layui.js"></script>-->
    <script src="//unpkg.com/layui@2.9.13/dist/layui.js"></script>
    <script src="vivo.js"></script>
        <script src="../jquery/jquery3.6.js"></script>

    <!--统一URL-->
    <script src="../URLJS/URL.js"></script>
    <link rel="stylesheet" href="https://cdn.staticfile.org/layui/2.5.6/css/layui.css">

    <link rel="icon" href="/aaaa/favicon.ico">
    <style>
        *{margin:0; padding:0;}
        body{ background-color: #1E1E1E;     }
        .layui-panel{position: relative; border-width: 0px; border-style: solid;
            border-radius: 2px; font-size: 30px; box-shadow: 1px 1px 4px rgb(0 0 0 / 8%); background-color: transparent; color: white;}
    </style>
    <style>
        html,
        body {
            height: 100%;
            padding: 0;
            margin: 0;
            background: #000;
        }
        canvas {
            position: absolute;
            width: 100%;
            height: 100%;
            animation: anim 1.5s ease-in-out infinite;
            -webkit-animation: anim 1.5s ease-in-out infinite;
            -o-animation: anim 1.5s ease-in-out infinite;
            -moz-animation: anim 1.5s ease-in-out infinite;
        }
        #name {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            margin-top: -20px;
            font-size: 30px;
            color: #ea80b0;
        }
        @keyframes anim {
            0% {
                transform: scale(0.8);
            }
            25% {
                transform: scale(0.7);
            }
            50% {
                transform: scale(1);
            }
            75% {
                transform: scale(0.7);
            }
            100% {
                transform: scale(0.8);
            }
        }
        @-webkit-keyframes anim {
            0% {
                -webkit-transform: scale(0.8);
            }
            25% {
                -webkit-transform: scale(0.7);
            }
            50% {
                -webkit-transform: scale(1);
            }
            75% {
                -webkit-transform: scale(0.7);
            }
            100% {
                -webkit-transform: scale(0.8);
            }
        }
        @-o-keyframes anim {
            0% {
                -o-transform: scale(0.8);
            }
            25% {
                -o-transform: scale(0.7);
            }
            50% {
                -o-transform: scale(1);
            }
            75% {
                -o-transform: scale(0.7);
            }
            100% {
                -o-transform: scale(0.8);
            }
        }
        @-moz-keyframes anim {
            0% {
                -moz-transform: scale(0.8);
            }
            25% {
                -moz-transform: scale(0.7);
            }
            50% {
                -moz-transform: scale(1);
            }
            75% {
                -moz-transform: scale(0.7);
            }
            100% {
                -moz-transform: scale(0.8);
            }
        }
    </style>
</head>
<body>
<canvas id="pinkboard"></canvas>
<!-- 添加名字 -->
<div>
<div id="name" style="color: blue;" >
    <!--    xxx<br>-->
        I Love You
</div>
</div>

<canvas id="drawHeart"></canvas>
<div style="z-index: 999;position: absolute;left: 0%;top: 10%" class="layui-anim" id="example-anim-element" style="padding: 16px 0;">
    <div class="layui-panel">
        <div style="padding: 32px;">
        <span id="txt">
            疯狂星期四</span>
        </div>
    </div>
    <button class="layui-btn layui-btn-primary" id="example-anim-usage">下个菜</button>
</div>

<script>
    layui.use(function(){
        var $ = layui.$;
        var elem = $('#example-anim-element');
        var animName = 'layui-anim-rotate'; // 动画类名
        // 数组
        //var text = ['layui-anim-scaleSpring','layui-anim-scalesmall','layui-anim-scalesmall-spring','layui-anim-fadein','layui-anim-scale']

        var text = ['layui-anim-scaleSpring']

        // 通过事件简单演示动画过程
        $('#example-anim-usage').on('click', function(){
            // 随机0-textleng
            var index = Math.floor(Math.random() * text.length);
            animName = text[index];
            elem.removeClass(animName);
            setTimeout(function(){
                elem.addClass(animName);
                initText();
            });
        });
    });











    var settings = {
        particles: {
            length: 500,
            duration: 2,
            velocity: 100,
            effect: -0.75,
            size: 30,
        },
    };
    (function () {
        var b = 0;
        var c = ["ms", "moz", "webkit", "o"];
        for (var a = 0; a < c.length && !window.requestAnimationFrame; ++a) {
            window.requestAnimationFrame = window[c[a] + "RequestAnimationFrame"];
            window.cancelAnimationFrame =
                window[c[a] + "CancelAnimationFrame"] ||
                window[c[a] + "CancelRequestAnimationFrame"];
        }
        if (!window.requestAnimationFrame) {
            window.requestAnimationFrame = function (h, e) {
                var d = new Date().getTime();
                var f = Math.max(0, 16 - (d - b));
                var g = window.setTimeout(function () {
                    h(d + f);
                }, f);
                b = d + f;
                return g;
            };
        }
        if (!window.cancelAnimationFrame) {
            window.cancelAnimationFrame = function (d) {
                clearTimeout(d);
            };
        }
    })();
    var Point = (function () {
        function Point(x, y) {
            this.x = typeof x !== "undefined" ? x : 0;
            this.y = typeof y !== "undefined" ? y : 0;
        }
        Point.prototype.clone = function () {
            return new Point(this.x, this.y);
        };
        Point.prototype.length = function (length) {
            if (typeof length == "undefined")
                return Math.sqrt(this.x * this.x + this.y * this.y);
            this.normalize();
            this.x *= length;
            this.y *= length;
            return this;
        };
        Point.prototype.normalize = function () {
            var length = this.length();
            this.x /= length;
            this.y /= length;
            return this;
        };
        return Point;
    })();
    var Particle = (function () {
        function Particle() {
            this.position = new Point();
            this.velocity = new Point();
            this.acceleration = new Point();
            this.age = 0;
        }
        Particle.prototype.initialize = function (x, y, dx, dy) {
            this.position.x = x;
            this.position.y = y;
            this.velocity.x = dx;
            this.velocity.y = dy;
            this.acceleration.x = dx * settings.particles.effect;
            this.acceleration.y = dy * settings.particles.effect;
            this.age = 0;
        };
        Particle.prototype.update = function (deltaTime) {
            this.position.x += this.velocity.x * deltaTime;
            this.position.y += this.velocity.y * deltaTime;
            this.velocity.x += this.acceleration.x * deltaTime;
            this.velocity.y += this.acceleration.y * deltaTime;
            this.age += deltaTime;
        };
        Particle.prototype.draw = function (context, image) {
            function ease(t) {
                return --t * t * t + 1;
            }
            var size = image.width * ease(this.age / settings.particles.duration);
            context.globalAlpha = 1 - this.age / settings.particles.duration;
            context.drawImage(
                image,
                this.position.x - size / 2,
                this.position.y - size / 2,
                size,
                size
            );
        };
        return Particle;
    })();
    var ParticlePool = (function () {
        var particles,
            firstActive = 0,
            firstFree = 0,
            duration = settings.particles.duration;

        function ParticlePool(length) {
            particles = new Array(length);
            for (var i = 0; i < particles.length; i++)
                particles[i] = new Particle();
        }
        ParticlePool.prototype.add = function (x, y, dx, dy) {
            particles[firstFree].initialize(x, y, dx, dy);
            firstFree++;
            if (firstFree == particles.length) firstFree = 0;
            if (firstActive == firstFree) firstActive++;
            if (firstActive == particles.length) firstActive = 0;
        };
        ParticlePool.prototype.update = function (deltaTime) {
            var i;
            if (firstActive < firstFree) {
                for (i = firstActive; i < firstFree; i++)
                    particles[i].update(deltaTime);
            }
            if (firstFree < firstActive) {
                for (i = firstActive; i < particles.length; i++)
                    particles[i].update(deltaTime);
                for (i = 0; i < firstFree; i++) particles[i].update(deltaTime);
            }
            while (
                particles[firstActive].age >= duration &&
                firstActive != firstFree
                ) {
                firstActive++;
                if (firstActive == particles.length) firstActive = 0;
            }
        };
        ParticlePool.prototype.draw = function (context, image) {
            if (firstActive < firstFree) {
                for (i = firstActive; i < firstFree; i++)
                    particles[i].draw(context, image);
            }
            if (firstFree < firstActive) {
                for (i = firstActive; i < particles.length; i++)
                    particles[i].draw(context, image);
                for (i = 0; i < firstFree; i++) particles[i].draw(context, image);
            }
        };
        return ParticlePool;
    })();
    (function (canvas) {
        var context = canvas.getContext("2d"),
            particles = new ParticlePool(settings.particles.length),
            particleRate =
                settings.particles.length / settings.particles.duration,
            time;
        function pointOnHeart(t) {
            return new Point(
                160 * Math.pow(Math.sin(t), 3),
                130 * Math.cos(t) -
                50 * Math.cos(2 * t) -
                20 * Math.cos(3 * t) -
                10 * Math.cos(4 * t) +
                25
            );
        }
        var image = (function () {
            var canvas = document.createElement("canvas"),
                context = canvas.getContext("2d");
            canvas.width = settings.particles.size;
            canvas.height = settings.particles.size;
            function to(t) {
                var point = pointOnHeart(t);
                point.x =
                    settings.particles.size / 2 +
                    (point.x * settings.particles.size) / 350;
                point.y =
                    settings.particles.size / 2 -
                    (point.y * settings.particles.size) / 350;
                return point;
            }
            context.beginPath();
            var t = -Math.PI;
            var point = to(t);
            context.moveTo(point.x, point.y);
            while (t < Math.PI) {
                t += 0.01;
                point = to(t);
                context.lineTo(point.x, point.y);
            }
            context.closePath();
            context.fillStyle = "#ea80b0";
            context.fill();
            var image = new Image();
            image.src = canvas.toDataURL();
            return image;
        })();
        function render() {
            requestAnimationFrame(render);
            var newTime = new Date().getTime() / 1000,
                deltaTime = newTime - (time || newTime);
            time = newTime;
            context.clearRect(0, 0, canvas.width, canvas.height);
            var amount = particleRate * deltaTime;
            for (var i = 0; i < amount; i++) {
                var pos = pointOnHeart(Math.PI - 2 * Math.PI * Math.random());
                var dir = pos.clone().length(settings.particles.velocity);
                particles.add(
                    canvas.width / 2 + pos.x,
                    canvas.height / 2 - pos.y,
                    dir.x,
                    -dir.y
                );
            }
            particles.update(deltaTime);
            particles.draw(context, image);
        }
        function onResize() {
            canvas.width = canvas.clientWidth;
            canvas.height = canvas.clientHeight;
        }
        window.onresize = onResize;
        setTimeout(function () {
            onResize();
            render();
        }, 10);
    })(document.getElementById("pinkboard"));

</script>
</body>
</html>
